Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistan…

@Whoisjson

About Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistan…

WhoisJSON MCP Server exposes four domain intelligence tools directly inside Claude, Cursor, and Windsurf — no code required.

#whois #dns #ssl #domain #security #mcp #api #lookup #network #pentest #threat-intelligence #domain-availability #certificate

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": [
        "-y",
        "@whoisjson/mcp-server"
      ],
      "env": {
        "WHOISJSON_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Tools

Retrieve WHOIS registration data for a domain name. Returns registrar details, creation/expiration dates, nameservers, contact information, DNSSEC status, and domain age analysis. Useful for checking domain ownership and registration info.

Query DNS records for a domain name. Returns all available record types including A (IPv4), AAAA (IPv6), MX (mail), NS (nameservers), TXT, CNAME, SOA, CAA, DMARC, BIMI, MTA-STS, and TLS-RPT records. Useful for diagnosing DNS configuration, verifying mail settings, or auditing domain infrastructure.

Retrieve and validate the SSL/TLS certificate details for a domain. Returns the issuer, validity period (valid_from / valid_to), whether the certificate is currently valid, fingerprints, subject alternative names, and full certificate details. Useful for checking certificate expiry, verifying the issuer, or auditing TLS configuration.

Check whether a domain name is available for registration. Returns a boolean indicating if the domain is available. Useful for finding an unregistered domain before attempting to register it.

Overview

What is Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants?

An MCP server that integrates with the WhoisJSON API to provide WHOIS, DNS, SSL, and domain availability lookup tools for AI assistants. It is intended for developers and users who need domain intelligence within AI chat interfaces.

How to use Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants?

Install globally via npm install -g @whoisjson/mcp-server or run directly with npx @whoisjson/mcp-server. Configure your WhoisJSON API key as the environment variable WHOISJSON_API_KEY in your MCP client’s configuration file (e.g., Claude Desktop, Cursor, or Windsurf). The AI assistant can then invoke the exposed tools.

Key features of Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

whois_lookup: retrieve WHOIS registration data for a domain
dns_lookup: fetch all DNS records for a domain
ssl_check: inspect SSL/TLS certificate details and validity
domain_availability: check if a domain is available for registration

Use cases of Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

Verify domain ownership and registration details via WHOIS lookup
Troubleshoot DNS configuration by fetching all record types
Assess SSL certificate health and expiration for a domain
Determine domain availability for new registrations or purchases
Integrate domain intelligence into AI-powered support or research workflows

FAQ from Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

What tools does this server provide?

It exposes four tools: whois_lookup, dns_lookup, ssl_check, and domain_availability.

What are the prerequisites to use this server?

You need Node.js version 18 or later and a WhoisJSON API key, which you can obtain by signing up at whoisjson.com.

How do I install and configure this server?

Install via npm install -g @whoisjson/mcp-server or run with npx. Set the WHOISJSON_API_KEY environment variable, then add the server configuration to your MCP client’s config file (examples are provided for Claude Desktop, Cursor, and Windsurf).

How do I run this server locally for development?

Clone the repository, run npm install, npm run build, then start with WHOISJSON_API_KEY=your_key npm start.

Which MCP clients are supported?

The README includes configuration instructions for Claude Desktop, Cursor, and Windsurf.

Frequently asked questions

What tools does this server provide?

It exposes four tools: `whois_lookup`, `dns_lookup`, `ssl_check`, and `domain_availability`.

What are the prerequisites to use this server?

You need Node.js version 18 or later and a WhoisJSON API key, which you can obtain by signing up at [whoisjson.com](https://whoisjson.com).

How do I install and configure this server?

Install via `npm install -g @whoisjson/mcp-server` or run with `npx`. Set the `WHOISJSON_API_KEY` environment variable, then add the server configuration to your MCP client’s config file (examples are provided for Claude Desktop, Cursor, and Windsurf).

How do I run this server locally for development?

Clone the repository, run `npm install`, `npm run build`, then start with `WHOISJSON_API_KEY=your_key npm start`.

Which MCP clients are supported?

The README includes configuration instructions for Claude Desktop, Cursor, and Windsurf.

Comments

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